package dto;

public class TreeNode {
	  public int val;
      public TreeNode left;
	  public TreeNode right;
      public TreeNode(int x) { val = x; }

	public TreeNode buildTree() {
		TreeNode root = new TreeNode(0);
		TreeNode left = new TreeNode(-1);
		//TreeNode right = new TreeNode(3);
		root.left = left;
		//root.right = right;
		return root;
	}
}
